This men's G String free form can slide apart for more coverage or together for skimpier coverage. Great as swimwear or underwear. It has no back. Just the waistband holding the pouch up which cups under the testicles. Made of stretchy nylon Lycra. It has a seamed contour front for added room and comfort. The waistband is 3/8"wide braided stretchy elastic available in white or black.